I’m absolutely happy with my installation of Ubuntu Mate 15.10. The only thing that’s buggin me is a missing icon in my top panel. Instead of the blueish thing belonging to the “Copy”-App running in the background I have a white icon with a red “x” indicating that something might be missing. Theres no problem in accessing Copy by this indicator but it’s looking really ugly …
Any thought on how to change this situation?
That sounds like it has lost the path to an icon. (see picture below, where I have deliberately lost the link to an icon for one of my top panel items) If you right click it you should find an option called "properties". You can reassign an icon by pressing the icon button in the properties dialogue box
If, on the other hand, it does not let you access the icon path, then is it possible to re-apply this item to your panel and see if it comes up correctly after that? If it does, then delete the original one that is faulty.
Actually, as an aside, what is this "Copy-app" since I don't have one on my panel, nor can I find anything like that in the items to add list? I am using Ubuntu Mate 14.04, if that makes a difference.
@Ueli_Strasser, welcome to the community! If you're referring to an indicator (not a missing file icon as @stevecook172001 suggests) , you could try changing the panels to make use of indicator and non-indicator layout, as I know that the tray icon for Telegram doesn't work with an indicator panel, but works when indicators are disabled.
You can toggle between indicator panels in MATE Tweak - Don't forget to restart the application afterwards.
I had a fresh install and the telegram and dropbox icons worked perfectly. It wasn’t till a week or 2 later that my icons became no entry signs. Any idea why this would happen? I didn’t enable or disable indicators in mate tweak.
There’s a technical difference between them, but vaguely:
Indicators are “applets”, which was designed by Canonical. When you switch this option on in MATE Tweak, some configuration is changed so the audio and network “tray icons” use applets instead. Any programs that only support “legacy” tray icons appear on the far left.
Non-Indicators is a more “standard” (or legacy?) technology as far as I’m aware, it’s also known as the system tray. This is the default (in 16.04), but chances are programs like Telegram and Dropbox use this as more desktop environments will support this.
The behaviours between them differ a bit – like left/right clicks, and there’s more spacing on indicator layouts.